Window sash operator



Dec. 15, 1942-. J, E, ONE 2,305,171

WINDOW SASH OPERATOR Filed Aug. 12, 1940 3 Sheets-Sheet 1 FIG?'A'TToRNEx' Dc. 15, 1942. I J JONES I 2,305,171

wmnow SASH OPERATOR "Filed Aug. 12', 1940 s Sheets-Sheet 2 J7ME5 EJon/5, v.

INVENTOR.

, ZZ$JWM4 ATTQRNEYI Dec. 15,1942.

J. E. JONES WINDOW SASH OPERATOR Filed Aug 12, 1940 .3 Sheets-Sheet 3 5.77,155 Gig Ewan.

ATTORNEY I Patented Dec. 15, 1942 GFFICE UNITED STATS; 2,305,171

3 Claims.

. of a drum member having notches provided in the periphery thereof andproviding means for maintaining hinged sash in any desired position.

Another object of the invention is the provision of a brake shoe locatedadjacent a rotatable drum member and frictionally engageable there with,and with the brake shoe providing means retarding the closing speed ofhinged sash in connection therewith.

A further object of the invention is the provision of a rotatable drummember having a pivoted lever positioned adjacent thereto, and with thelever providing means for maintaining the drum in any desired position,and with one end of the lever adapted to engage a slidable brake shoeand force the same frictionally against the outer periphery of the drum.I

A still further object of the invention is the provision of acombination stop and brake mechanism which is positive in its operation,which is simple of construction, and which is economical to manufacture.

Other objects and advantages of the invention will suggest themselves inthe course of the following description, and that which is new will bepointed out in the appended claims.

The most satisfactory manner of carrying out the principles of theinvention in a practical, comprehensive, and efficient manner is shownin the accompanying three sheets of drawings, in

which:

Figure 1 is a side elevational detail showing the device in completelyassembled condition, and

with the same being connected with a swingable overhead sash. y

Figure 2 is a side elevation of the rotatable drum and with theassociated members being shown in engaged position, and with themanually operated wheel being omitted therefrom.

Figure 3 is a side elevation similar to Figure 2 but with the levermember being shown in disengaged relation with the rotatable drum.

Figure 4 is also a side elevation similar to Figures 2 and 3 but withthe lever member in entaken from line 5-5 of Figure 2.

Figures 6, 7, and 8 are detail elevations simi- I lar to Figures 2, 3,and 4 respectively, except the parts are shown in larger detail.

Figure '9 is a side elevation of the supporting member on which therotatable drum, the lever, and the brake shoe are mounted.

Figure 10 is a detail section, taken on line iii-l0 of Figure 9, andshowing the guides provided for the brake shoe.

Figure 11 is an edge elevation of the brake shoe.

Figure 12 is a detail elevation of the brake shoe, taken from line l2-l2 of Figure 11.

Like characters designate like parts throughout the several views.

In order that the construction, the operation, and the advantages of theinvention may be more fully understood and appreciated, I will now takeup a detailed description thereof in which I will set forth the same asfully and as comprehensively as I may.

' porting member.

In the drawings, l designates the tubular supporting member which isrigidly secured at its lower end to the floor construction through themember 2, and with the upper end thereof being secured to the roofjoists 3 in the usual manner. The tubular shaft member 3 is journalledin a bearing located at the upper end of the sup- A sprocket 4 isrigidly secured on the member 3 and provides means for rotating themember 3. Pinion members 5 are rigidly secured on the member 3 adjacenteach of the sash to be operated. A rack member 5 is extended througheach of the pinion members 5 with the upper ends thereof bein secured toa respective sash 9 by means of the pivotal connections l. The sprocket4 is rotated by means of the transmission chain ii) which extends aroundthe sprocket l I, the sprocket being rotatably mounted on the shaft I2.One end of the shaft IE is rigidly secured in the hub portion I4 of thesupporting casting is by means of threaded set screws 15.

The supporting casting I3 is rigidly secured on the tubular uprightmember I by means of threaded bolts l 5 passing through the member l3and the clamping member ll.

The lower operating assembly is comprised of the sprocket II which isformed integrally with the hub portion of the hand wheel [8 and the drummember l9 which is rigidly secured thereto by means of the connectingmember 20. The assembly just described being rotatably secured on theshaft [2 by means of the cotter 2| extending through the aperture l2.

The drum member H! has a comparatively flat outer periphery in which aplurality of voids 22 are formed.

The lever member 23 is pivotally secured to the supporting casting l3 bymeans of the rivet 24 extending through the aperture 28. The lever 23has the engaging lug 25 formed on the under surface thereof with thesame being adapted to engage the drum [9 at the locations of the voids22. A stop 26 is also formed on the under side of the lever 23 and isadapted to contact the outer peripheral surface of the drum when the lug25 is engaged in one of the voids 22. A fiinger 21 forms the extremepivotal end of the lever 23, the

purpose of which will be hereinafter fully set forth. f

The brake shoe member has the curved portion 29 which has substantiallythe same curvature as the outer periphery of the drum l 9. Aguide-engaging portion 30 is formed integrally with the curved portion29 and provides for a sliding motion of the brake shoe between the upperand lower guides 32 and 33 respectively of the supporting member l3. Aboss 3| is formed on the convex surface of the brake shoe for engagementof the the hand wheel l8 by means of the ha l 5:,

her H3. The turning of the hand wheel causes the rotation of thesprocket 4 through the medium of the connecting chain In. The sprocket4, being rigidly secured on the shaft 3 transmits rotary motion theretoand carries the pinion 5 therewith causing the rack 6 to be movedupwardly or downwardly and thereby actuating the sash 9 accordingly.

When it is desired to stop the sash in any position, the lever 23 islowered until the lug 25 engages a void 22 in the periphery of the druml9. Disengagement of the lug 25 with the voids 22 when the sash I9 is inopen position permits the sash to close by its own weight. It isnecessary that the closing movement of the sash be retarded,

and it is for this purpose the brake shoe is provided.

It will be noted that when the lever 23 is positioned as shown inFigures 2, 3, 6, and '7, the finger 21 does not engage the boss 3|.However, when the lever is lifted to the position as shown in Figures 4and 8, the finger 21 is brought into engagement with the boss 3| and afurther lifting motion of the lever causes the portion 29 tofrictionally contact the outer periphery of the drum l9 and retard therotation thereof.

t will be noted that the guide portion 30 of the brake shoe is guided inits engaging and disengaging action by the upper and lower guides 32 and33 respectively of the supporting member l3. The guide portion 38 isslidably positioned between the supporting member I3 and the finger 21of the lever 23, but is not secured to either of the members.

When the lever 23 is again returned to either of the positions'as shownin Figures 2, 3, 6, and 7 the finger 21 is disengaged from the boss 3iand the friction of the brake shoe against the drum is substantiallynil.

It will be obvious from the above that the upper portion of theoperating mechanism is of the conventional type, but the lower portionthereof is new inasmuch as the same provides a stop or locking means, abraking means to retard the closing action of the operated sash, and afree movement which permits the raising of the sash by manual operation.

It is to be understood that minor changes may be made in the severalparts and in the details herein shown and described, insofar as thechanges may fall within the scope of the appended claims.

Having now fully shown and described the invention, what I claim anddesire to secure by Letters Patent of the United States is:

1. In a sash operating device, a supporting member having a drumrotatably mounted thereon, a brake shoe frictionally engageable with theouter periphery of the drum and slidable towards and away from the drumbetween a pair of guides, a pivoted lever having a lug formed integrallytherewith and engageable with voids formed in the periphery of the drum,a finger formed integrally with one end of the pivoted lever and adaptedto apply pressure against the brake shoe in the direction of the drum,with the finger being unattached to the brake shoe, and with the brakeshoe being free to continuously contact the periphery of the drum. 7

2. In a sash operating device having a rotatable drum, a pair of guidesformed adjacent the. periphery of the drum, a brake shoe slidablypositioned in the guides and engageable with the peripherial surface ofthe drum with the brake shoe being freely slidable within the guides tocontinuously contact the periphery of the drum, and means disengagedwith the brak shoe and forcing the same into braking engagement with theperipherial surface of the drum.

3. In a sash operating device, a rotatable drum, a pivoted lever adaptedto engage the drum, 2. stop formed on the lever adapted to engage theperipherial surface of the drum, a brake shoe freely slidable between apair of guides and frictionally engaging the peripherial surface of thedrum, and means formed on the end of the pivoted lever forcing the brakeshoe into braking engagement with the peripherial surface of the drumwhen the lever is disengaged with the drum.

JAMES E. JONES.

